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7733 Datasheet(PDF) 418 Page - Renesas Technology Corp |
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7733 Datasheet(HTML) 418 Page - Renesas Technology Corp |
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418 / 940 page  APPLICATIONS 7733 Group User’s Manual 17–11 Fig. 17.1.6 Ready generating circuit example (with no wait) 17.1 Memory expansion 1 = 2 , f(XIN) 8 , f(XIN) 16 , f(XIN) f(XCIN) or Wait generated by the ready function is inserted only to an area where accessed by signal CS2. M37733MHBXXXFP CS1 A8 to A23 (D0 to D15) A0 to A7 AC74 D T Q 1 RDY E AC32 AC32 AC04 Address bus Data bus Address latch circuit Address decode circuit CS2 Circuit conditions: f (XIN) ≤ 15.7 MHz, no wait 1 E 1 CS2 Q RDY tc td(E- 1) tsu(RDY- 1) Propagation delay time of AC32 (Max.: 8.5 ns) g g Condition to satisfy the relationship of t su(RDY- 1) ≥ 55 ns in the left timing chart is tc ≥ 63.5 ns. Accordingly, when f(X IN) ≤ 15.7 MHz, this example satisfies the relationship of t su(RDY- 1) ≥ 55 ns. : Wait generated by the ready function 2 |
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